<!--********************************************************************
* Copyright© 2000 - 2025 SuperMap Software Co.Ltd. All rights reserved.
*********************************************************************-->
<!DOCTYPE html>
<html lang="en-US">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=Edge">
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
    <title data-i18n="resources.title_graphiclayerCanvas"></title>
    <script type="text/javascript" include="randomcolor,papaparse,widgets" src="../js/include-web.js"></script>
    <script type="text/javascript" src="../../dist/ol/include-ol.js"></script>
    <style>
        .ol-popup {
            position: absolute;
            background-color: white;
            -webkit-filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.2));
            filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.2));
            padding: 15px;
            border-radius: 10px;
            border: 1px solid #cccccc;
            bottom: 12px;
            left: -50px;
            min-width: 50px;
        }

        .ol-popup:after,
        .ol-popup:before {
            top: 100%;
            border: solid transparent;
            content: " ";
            height: 0;
            width: 0;
            position: absolute;
            pointer-events: none;
        }

        .ol-popup:after {
            border-top-color: white;
            border-width: 10px;
            left: 48px;
            margin-left: -10px;
        }

        .ol-popup:before {
            border-top-color: #cccccc;
            border-width: 11px;
            left: 48px;
            margin-left: -11px;
        }
    </style>
</head>

<body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%; position: absolute;top: 0;">
    <div id="map" style="width: 100%;height:100%"></div>
    <div id="popup" class="ol-popup">
        <div id="popup-content"></div>
    </div>
    <script type="text/javascript">
        var url = (window.isLocal ? window.server : "https://iserver.supermap.io") +
            "/iserver/services/map-china/rest/maps/ChinaDark";
        var container = document.getElementById('popup');
        var content = document.getElementById('popup-content');
        var overlay = new ol.Overlay(({
            element: container,
            autoPan: true,
            autoPanAnimation: {
                duration: 250
            }
        }));
        var map = new ol.Map({
            target: 'map',
            // ol v7版本用法为ol.control.defaults.defaults； v6版本以下用法为ol.control.defaults
            controls: ol.control.defaults.defaults({
                    attributionOptions: {
                        collapsed: false
                    }
                })
                .extend([new ol.supermap.control.Logo({ link: "https://iclient.supermap.io" })]),
            view: new ol.View({
                center: ol.proj.transform([-73.9286, 40.75], 'EPSG:4326', 'EPSG:3857'),
                zoom: 12,
                projection: 'EPSG:3857',
                multiWorld: true
            }),
            overlays: [overlay]
        });

        var colorCount = 10;
        var colors = getRandomColors(colorCount);
        widgets.loader.showLoader();
        $.get('../data/nyc_taxi_18W.csv', function (nycData) {
            new ol.supermap.MapService(url).getMapInfo(function (serviceResult) {
                var mapJSONObj = serviceResult.result;
                var options = ol.source.TileSuperMapRest.optionsFromMapJSON(url, mapJSONObj);
                var layer = new ol.layer.Tile({
                    source: new ol.source.TileSuperMapRest(options)
                });
                map.addLayer(layer);

                var randomCircleStyles = [];
                for (var i = 0; i < colorCount; i++) {
                    randomCircleStyles.push(new ol.style.RegularShape({
                        radius: Math.floor(Math.random() * 10 + 1),
                        fill: new ol.style.Fill({
                            color: colors[i]
                        }),
                        stroke: new ol.style.Stroke({
                            color: colors[i]
                        }),
                        points: 3,
                    }));
                }
                var features = Papa.parse(nycData, {
                    skipEmptyLines: true,
                    header: true
                }).data;

                var count = features.length; //矢量点的个数
                var graphics = new Array(count);
                for (var i = 0; i < count; ++i) {
                    var coordinates = [Number(features[i].X), Number(features[i].Y)];
                    if (coordinates[0] === coordinates[1]) {
                        continue;
                    }
                    coordinates = ol.proj.transform(coordinates, 'EPSG:4326', 'EPSG:3857');
                    graphics[i] = new ol.Graphic(new ol.geom.Point(coordinates));
                    graphics[i].setStyle(randomCircleStyles[Math.floor(Math.random() * colorCount)]);
                }
                map.once('postrender', function () {
                    var source = new ol.source.Graphic({
                        graphics: graphics,
                        render: "canvas",
                        map: map,
                        onClick: function (graphic) {
                            if (graphic) {
                                var coords = graphic.getGeometry().getCoordinates();
                                content.innerHTML = resources.text_coordinate + ":[" + coords[0] + "," + coords[1] + "]";
                                overlay.setPosition(graphic.getGeometry().getCoordinates());
                                return;
                            }
                            overlay.setPosition(undefined);
                        }
                    })
                    var graphicLayer = new ol.layer.Image({
                        source: source
                    });
                    map.addLayer(graphicLayer);
                    widgets.loader.removeLoader();
                });

            });


        });

        function getRandomColors(count) {
            return randomColor({
                luminosity: 'bright',
                hue: 'random',
                alpha: 0.5,
                format: 'rgba',
                count: count
            });
        }
    </script>
</body>

</html>